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  1. 97yelstang

    gear question

    ok i have 3.55 gears and i want to get something else 3.90 or something i tach about 2500 at 75mph...sound about right? what would it be if i had 3.90s or 4.10? i also don't want my first and second gears to be too short, my friend had a 97 cobra with 4.10s and they were perfect for his...
  2. 97yelstang

    pi and supercharge?

    ok i recently did a pi headswap and i wanted to know how much compression that changes my car to. also i wanted to put a kennebell on it. how much boost can i run? i heard it was about 6psi if i intercool it....would that be worth it?
  3. 97yelstang

    97 cobra injectors

    would a 97 cobra maf fit and work properly with 97 cobra injectors on a 97 gt
  4. 97yelstang

    97 cobra injectors

    i have a friend who has a 97 cobra and he got bigger injectors .... so my question is would his stock injectors work on my car which is a 97 gt and even if i didn't replace the maf, would they still work LIKE my stock injectors, what would need to be done to make them give me more power? and...
  5. 97yelstang

    why..

    well i ordered an intake with the alum crossover tube now and it even has two holes predrilled for the temp sensors and if your just gonna use it on a 99-04 you just plug the one hole, if its for the 96-98 well then i got the extra hole.. i don't know what they really cost but i got this one...
  6. 97yelstang

    why..

    why is it that when you do something to your car, something always goes wrong during or after the project.. for example i just did a pi headswap about a week ago and everything was fine, but it recently got very cold outside so i was draining the coolant out of my car (to put fresh coolant...
  7. 97yelstang

    ahhh headswap done...but one more question

    it seemed to go away now..hopefully, but sometimes it seems like it wants to stall but the idle catches itself at about 200rpms and doesn't let it stall (only did that about 2-3times) other than that the car RIPPS... i luv the headswap probably one the best mods i did so far but my coolant temp...
  8. 97yelstang

    ahhh headswap done...but one more question

    ok i finally finished the pi headswap and what a pain in the ass that was but its done and i'm happy with it but i have one question...is there an idle re-learn procedure?? cause at idle i have a random misfire but when i give it throttle it goes away and drives nicely. anyone else have this...
  9. 97yelstang

    dip stick

    is it possible to put a 99 dipstick in with the heads of the car and the exhaust connected
  10. 97yelstang

    doing a headswap

    ok guys i am doing a pi headswap and i got the heads on and timed but my question was how did you guys time your engines.....cause when i took the timing chains off of my old heads i didn't mark them or anything and they didn't have any marks on them so what i did was, i got pics off the...
  11. 97yelstang

    whats the name.....

    ok i'm doing a pi head swap and my only question is what is the name of the coolant line under the intake, that runs from the heater core to the waterpump?? i went to 2 autoparts stores and they didn't know what i was talking about and said i should go to a dealer. and when they thought they...
  12. 97yelstang

    one quick question about a pi swap

    is there a fitting for it or do i have to tap it in?
  13. 97yelstang

    one quick question about a pi swap

    what about the coolant temp sensor... the pi intake that i got has 1 hole and my old intake has 2 also the pi intake is the one with the plastic coolant passage not the metal one do i need both of them and could i splice them together?
  14. 97yelstang

    one quick question about a pi swap

    ok i read that on the pi headswap you need to get a different heater return hose...is that true...and can you just make it fit??
  15. 97yelstang

    speed cal problem

    ok recently my speedo stopped working....so i replaced the speed sensor and it still didn't work so then i found there to be a bad wire from the sensor to the computer so i replaced part of the wire....and it worked for about 2 months then it would start bouncing when i hit bumps...so i checked...
  16. 97yelstang

    swap questions

    ok i have a 97 gt and i'm thinking of doing a pi swap i already have the heads and intake not i researched the swap but i have a question ok i have a hypertech chip in my car with a 160 t stat so right now i run 87 oct with no problems but when i do the headswap i know i will have to run 93...
  17. 97yelstang

    dumb question

    this is probably a dumb question but i was wondering if i got 4.10 gears would my car be faster from a rolling start like 40mph?? cause i heard that it would actually be the same or slower from a roll...is that true? i know thats not the way u should race or anything i was just wondering...
  18. 97yelstang

    hesitation/stumble....help

    ok my car has approx. 100k on it and i just replaced the iac and it ran fine now whenever i'm at a cruise or leave my foot at the same spot on the throttle for a long period of time, the car will start to hesitate and stumble but the second i jump on it ..it has instant throttle response and...
  19. 97yelstang

    Stalling Problems

    Finally!!! i found the problem. After hours of tracing the wires (because the person who put the speedcal on had different colored wires) I found that the problem is from the speedcal to the pcm a wire was corroded on the inside...i jumped past it, directly to the pcm and it worked.... so then...
  20. 97yelstang

    Stalling Problems

    well now today my check engine light came on, so i hooked up the ngs and it said code P0500 vss fault vss 0mph at 2937rpms 100% load. so i road tested the car with the ngs and the mph was at 0 the whole time. so i replaced the vss (because it was cheap) and the problem still exists. btw...
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